Lock.



- 'PATENTED MAY ze, 1907.' F. X. EGKSTBIN.

LooK.

. APPLICATION FILED 00T.10,1906.

' IINITFDV srArFs FATFNT- oFFICF.

FRANoIs XAVIER FCKsTF'IN, oF sTFeFR, ILLINOIS.

To L7/Z whom, t may concern:

Be it known that I, FRANCIS XAVIER ECKSTEIN, a citizen of the United States, re-

' siding at Steger, in the county of Cook and `the rim 10a.

State of Illinois, have invented new and useful Improvements in Locks, of which the following is a specification.

This invention relates to locks particularly adapted for furniture, for use` on drawers, doors of cabinets and the like.

i A feature of the invention is that the lock is set in the wood and can be put in by boring two round holes, no chiseling or other cutting being necessary. Oneiof the holes contains the casing and the other the bolt.

A further object of the invention is to provide a look of few and simple parts, which can be cheaply made.

A further feature of the invention is a construction by `which the key cannot readily dro out of the lock and become lost.

T ie lockV is illustrated in the accompanying drawings, in which Figure l is a front elevation showing the lock applied, parts being shown in section. Fig. 2 is an edge view of the lock. Fig. 3 is a face view with the frontplate removed. Fig. 4 is a section on the line 4 4 of Fig. 3. Fig. 5 is a plan of the key.

Referring s ecifically to the drawings, the casing of the ock is circular in form, having a rim 10a, a backlOb, and a front plate 10?. The front plate is loose or rotatable in the casing, being held in place by aflange 10d on This plate has a key lslot 11, and the fiange 10d has a notch 10F with which the slot may register.

Virithin the casing, between the back and front plates, is a circular disk 14, which is rotatable in the casing. This disk has a cam slot 14a which receives a pin 12a on the bolt 12, which works-in a recess l0e in the rim ofthe casing. The disk 14 also has at its edge a notch 14O adapted to receive the bit of a key inserted through the slot 11. A lan Vof the key is shown in Fig. 5, the bit wich engages 'in the notch 14b being indicated at This bit is dropped or off-set to form a shoulder 16. I/Vhen the key is inserted Patented. May 28, 1907.

through the notch 10f and slot 11, and then turned, the shoulder' 16 will be engaged behind the fiange lOf, as shown in dotted lines in Fig. 4. Consequently the key cannot drop out or be taken out until the face plate is turned to register the key with the notch 101'. It can then be easily withdrawn. When the key is inserted and turned the face plate 10C and the caln plate 14 turn together and the bolt 12 is either advanced` or retracted. n

In putting the lock inl place on a drawer, say, it is only necessary to bore a hole of large diameter fromithe front, to receive the casing, and then bore another hole of small diameter from the top, to receive the bolt, and. the lock can then be set in ready lfor operation. The bolt is preferably made round, at least at the head, but it may be made fiat or any other shapel desired. The

back and rim of the casing may be made in one piece, and the flange 10b swaged down after the plates are put in, or the rim and flange, and the back, can be made in separate pieces and secured together when the lockis assembled.

' I claim: l

Inva lock, in combination, a cylindrical casing closed at the rear end and open at the front end and having an inwardly-projectingV flange'around the edge of the open end, the fiange having a notch, a circular face plate fitting and rotatable in the casing, behind the ange, and having a key slot adapted to register with the notch, a circular disk fitting and rotatable inthe casing, behind the plate,

and having a cam slot, and a key notch in its edge adapted to register with the slot in said face plate, and a bolt slidable radially in the casing behind the disk and having a pin extending into the slot.

In testimony whereof I have signed my naine to this specification in the presence ol' two subscribing witnesses.

FRANCIS XAvIFR FCKsTFIN.

Witnesses N. A. EoKsTEIN, J. A. WAoHs. 

